Dear experts, this spring I bought 2 little (tiny) sour cherry trees - "Romeo" and "Valentine" - at a local nursery. Both had little info tags attached to them which contain no useful information but the names of the varieties. On the web-site of their grower (U of S) there is also just a few facts on them. There is some info on how to prune regular fruit trees on the Internet, but these ones are dwarf trees, and I would appreciate your advice. Here is the link to the official description: http://www.fruit.usask.ca/dwarfsourcherries.html I also took pictures of them today morning and measured them. They both are 50 cm tall now and the lower branch is about 10 cm above the ground. I realize that pruning should be done somewhere in February/March, but I still need your advice now in case something should be done earlier. Thank you in advance everybody! P.S.: I have no idea how many years it may take my son to see first cherries on these trees...
In this area, you can prune most fruit trees any time. I would start training them right away by pinching off the tips of branches that you don't want to keep and letting the desirable growth continue. I'm been doing that with a new dwarf sweet cherry ever since I planted it this spring. Pruning this way will direct most of the growth where you want it, and you will have a minimum amount of pruning to do during the dormant season.
Thanks a lot for your reply, but I do not quite understand what you mean when you say "pinch off the tips of branches". By doing this, I will just make them shorter, but these branches will remain on the trees, right? I cannot find any picture of a mature dwarf cherry on the Internet to see how it should normally look and prune mines appropriately. I am not even sure how tall they will be in a few years - probably 1.5 m or so... How old is your tree? Could you upload its pic into this thread, please?
I find this is one of the best general, no nonsense resources to put your mind at ease around backyard fruit tree care: http://davewilson.com/home-gardens/backyard-orchard-culture
This is 2019, I bought the same cherry trees, Romero family, Please let me know how well it grow in your area. Thanks